Wheel-plow



-I. R. GILBERT. Wheel Plow.

Patented Aug. 3, 1880.

jm" m. ZEW/@WJ N. PETERS. FHOY0-LITHOGRAPHER. WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

ISAAC R. GILBERT, OF LOUISVILLE, KENTUCKY.

WH EEL-PLOW.

SPECIFICATION forming part of Letters Patent No. 230,767, dated August 3, 1880.

Application tiled April 2G, 1879.

1o all whom it may concern Be it known that I, ISAAC It. GILBERT, of Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Vheel-Plows; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification, in which- Figure l is a side elevation, showing the position of the lever when the wheel is depressed to its lowest point, and also in dotted -lines the highest position; and Fig. 2 is a front elevation with the lever in a vertical position, showing` the wheelspiudle in an intermediate place, or about one-half the distance betweenthe highest and lowest points at which the wheel is susceptible of being adjusted.

The nature of my invention consists in the con'ibination, in a sulky-plow, of aslidingaxle having a rack-bar securely attached thereto with an L-shaped lever. and a slotted bar, all constructed and arranged to operate substantially as hereinafter set forth.

In order to enable others skilled in the art to which myinveution appertains to make and use the same, I will now proceed to describe its construction and operation.

A represents the arched axle, to which, at one end, is firmly secured the metal plate B, the sides of which should project a little beyond the sides of the axle.

C represents a metal slide, and c the wheelspindle. These parts-1'.. e., the slide and spindle-are rigidly connected, as shown in Fig. 2. The sides ofthe slide C are turned at right angles, and then parallel with its face, toward each other, thus forming grooves, which, while admitting of the slide moving freely up or down, will yet clasp and hold it rmly to the face of the metal plate.

D represents a curved rack-bar, bolted or otherwise securely attached vto the slide C.

g is a slotted bar or arm, firmly secured to the arched axle, and extending at right angles thereto.

E is an I -shaped lever pivoted to thelower part of the rack-bar D, and provided with a spring-pawl, a., which engages with notches in the rack-bar. The short arm of the lever E has upon its outerend a small roller, as shown in dotted lines in Fig. 1, which travels in the slot in the arm g.

In operation, when the long arm ofthe lever E is raised, the roller upon the short arm travels outward in the slotted bar g, and the slide, rack, and wheel-spindle are carried up the metal bar B. When the longarm ot' the lever is perpendicular the roller will have passed outl as far as is possible, and when the leveris thrown down on the other side of the rack-bar the roller passes inward, raising the slide and its attachments still higher.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination ol' the slide C, having spindle c and rack-bar .1) attached thereto, with axle A, slotted arm 0, L-shaped lever E, and spring-pawl a., all constructed and arranged to operate substantially as and for the purposes set forth.

2. The combination, in a sulky-plow, of axle A, plate B, and slide C with rack-bar D, L shaped lever E, slotted arm g, and spindle e, all constructed and arranged substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

ISAAC R. GILBERT.

Witnesses: y

H. A. HALL, T. C. ALEXANDER. 

